A group decision making support system for the Web: how to work in environments with a high number of participants and alternatives Morente Molinera, Juan Antonio Kou, G. Pérez, I. J. Samuylov, K. Selamat, A. Herrera Viedma, Enrique Fuzzy linguistic modelling Group decision making Computing with words Multi-granular linguistic information One of the main challenges that the appearance of Web 2.0 and the overall spreading of the Internet have generated is how to tackle with the high number of users and information available. This problem is also inherited by the group decision making problems that can be carried out over the Web. In this article, to solve this issue, a group decision making support system that allows the use of a high number of participants and alternatives is presented. This method allows any number of participants to join the decision making process at any time. Furthermore, they let them provide information only about a certain subset of alternatives. The high participation rate can provide enough information for the decision process to be carried out even if the participants do not provide information about all the high number of available alternatives. 2018-09-20T11:58:26Z 2018-09-20T11:58:26Z 2018 info:eu-repo/semantics/preprint J.A. Morente-Molinera, G. Kou, I.J. P´erez, K. Samuylov, A. Selamat, E. Herrera-Viedma, A group decision making support system for the Web: how to work in environments with a high number of participants and alternatives. Applied Soft Computing Journal (2018) PREPRINT [http://hdl.handle.net/10481/52819] http://hdl.handle.net/10481/52819 10.1016/j.asoc.2018.03.047 eng http://creativecommons.org/licenses/by-nc-nd/3.0/es/ info:eu-repo/semantics/openAccess Atribución-NoComercial-SinDerivadas 3.0 España Elsevier B. V.